Electricity-saving system and electricity-saving method adopting independent photovoltaic module

Abstract

The invention provides an electricity-saving system and electricity-saving method adopting an independent photovoltaic module. The system is arranged on a ceiling of a gas station or a petrol station; the system comprises photovoltaic modules, an inverse control all-in-one machine, a switching module and a load which are arranged on the ceiling; the photovoltaic modules are connected in series and then are connected to the photovoltaic array input interface of the inverse control all-in-one machine in a manner of at least two paths; the inverse control all-in-one machine realizes charging and discharging control and inversion conversion; the commercial power output port of the inverse control all-in-one machine is connected with the commercial power access port of the switching module; the inversion output end of the inversion control all-in-one machine is connected with the inversion input port of the switching module; the switching module realizes conversion between solar generated power and commercial power; and the output end of the switching module is connected with the load. According to the electricity-saving system, the light and thin crystalline silicon solar photovoltaic modules are adopted. The invention further provides an electricity-saving method based on the electricity-saving system. The electricity-saving system is easy to implement and obvious in electricity-saving effect. In addition, an original commercial power supply system still needs to be reserved, the system has a commercial power complementation automatic switching function, so that the stability of the system is enhanced.

Description

technical field [0001] The invention belongs to the technical field of solar power generation, and in particular relates to an electricity-saving system and an electricity-saving method using independent photovoltaic modules. Background technique [0002] With the continuous development of the transportation industry, the number of gas filling stations or gas stations is increasing. Each city includes dozens or hundreds, and the roof area of ​​each gas station or gas station is about 450m 2 , If a solar power generation device can be installed on the gas station or the roof of the gas station to provide power for the lighting equipment, servers and other active equipment of the entire gas station, it will definitely save a lot of electricity. [0003] The design load-bearing of the gas station or the canopy of the gas station is 10kg / m on average 2 , while the glass photovoltaic modules commonly used today are required to be installed at a load-bearing capacity of 20kg / m 2...

AI Technical Summary

Problems solved by technology

Therefore, this weight is not suitable for placing on the roof of the non-load-bearing truss structure; if GB / T18911-2002 / IEC61646:1996 ground-use thin-film photovoltaic modules are used, the main problem of this kind of modules is the low photoelectric conversion efficiency, and the international advanced level is About 10%, and not stable enough, as time goes on, its conversion efficiency decays quickly

Therefore, it is not suitable for such distributed photovoltaic power stations

Images